Hikari and her sister are off for Europe.  But their plans are interrupted when the Fusou naval fleet is struck by a newly emerged Neuroi nest.  It's up to Takami to defend the fleet against this unexpected threat, but she's overwhelmed by the sheer number of enemies.  When she uses a dangerous technique to stave off the foes, it's up to the inexperienced and underpowered Hikari to protect the fleet...
learns that her older sister, 
Karibuchi Takami,
تدرك بأنّ أختها الكبرى كاريبوتشي تاكامي
motivada por la adhesión al Ala de
Combate Conjunto 502 de su hermana Takami,
movida por la adhesión al Ala de Combate
Conjunto 502 de su hermana Takami,
chiede di essere inviata in Europa, motivata
dalla riassegnazione della sorella maggiore
descobre que sua irmã mais
 velha, Karibuchi Takami,